Unicook Adjustable Porcelain Grill Heat Plate, 11.75–21 in

The Unicook adjustable porcelain grill heat plate is a single replacement heat shield with an adjustable length for certain outdoor gas grills. Its broad size range may help with nonstandard grill dimensions, but fit depends on the mounting slot and installation direction, so compare your existing plate and grill before ordering.

At a glance

Adjustable plate is listed to extend from 11.75 to 21 inches, with a shorter maximum when installed reversely.
Porcelain-coated steel plate is specified as 1.2mm thick.
Listing says the plate is intended to shield burners from direct flame and distribute heat toward the cooking grates.
The stated package is one adjustable plate with stainless steel M5 bolts and wing nuts.

Price

$13.98Save 18%

Reference price: ~~$16.99~~

Price checked: Nov 12, 2026

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Pros and cons

Pros

Adjustable length accommodates a range of grill plate dimensions.
The listing specifies a single replacement plate and installation hardware, rather than requiring a multi-piece set.
Customer feedback reports straightforward installation and positive impressions of heat distribution.

Technical specifications

9 specifications

Dimensions and installation
Dimensions listed	11.75 x 3.75 x 1 inches
Weight listed	1.23 pounds
Adjustable length	11.75” up to 21”
Length when installed reversely	11.75” to 18.37” only
Width	3.75”
Mounting orientation	side-to-side and front-to-back burners

Materials and construction
Material	porcelain-coated steel
Thickness	1.2mm
Hardware material	Stainless Steel

What to know before buying

Compatibility is not guaranteed by the broad fit claim. Measure the original heat shield and the grill's mounting slot, and confirm its width and orientation before ordering. The listing gives 11.75 to 21 inches as the extension range but says reverse installation reaches only 18.37 inches.

Who is it for?

A good fit for

Grill owners replacing a single heat plate who can measure their existing part and mounting slot.
Buyers whose replacement needs fit the listed 3.75-inch width and adjustable length range.

Less suited to

Buyers who need a confirmed model-specific fit without checking grill dimensions.
Buyers needing several replacement plates in one package.

Unicook Adjustable Porcelain Grill Heat Plate, 11.75–21 in · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 12,826 ratings

5 stars74%74%
4 stars17%17%
3 stars6%6%
2 stars1%1%
1 star2%2%

Customer feedback highlights ease of installation, perceived durability, adjustability and heat distribution, with some customers saying the plates compare favorably with original parts. Size feedback is mixed, including reports that the width is too small. For buyers, the fit concern matters because the plate is listed as 3.75 inches wide and requires a mounting-slot check. The generally favorable aggregate ratings provide context but do not establish fit for a particular grill.

Positive themes

Customers report easy installation and appreciate the adjustable length.
Feedback describes positive impressions of durability and heat distribution.

Mixed feedback

Size feedback is mixed, with some customers finding the width too small.

Frequently asked questions

How long can the heat plate extend?

The listing says it adjusts from 11.75 to 21 inches. When installed reversely, it gives a shorter range, ending at 18.37 inches.

How can I check whether it will fit my grill?

Measure your existing heat shield and the grill's mounting slot. Compare the plate width and length, and account for the shorter extension range when installed reversely.

What comes with the plate?

The listing describes one adjustable heat plate with stainless steel M5 bolts and wing nuts.

What do customers report about fit and use?

Customer feedback describes easy installation and useful adjustability, but opinions on size are mixed, including reports that the width feels too small. Verify your grill measurements before buying.